Cleaning composition containing isopropyl alcohol



- crate the alcoholic bodies.

trated alcohol.

Patented Aug. 6, 1929.

- UNITED STA QES PATENT OFFICE.

IEDWARD F. III ItYDT, OF- MONTCLAIB,'NEW JERSEY, ASSIGNOR TC PETROLEUM DE- RIVATIVES COMPANY, A COREPORATION OF NEW JERSEY.

CLEANING COMPOSITION coN'rAIe S R L ALCOHOL.

No Drawing. Application filed May 21,

containing isopropyl alcohol, tertiary butyl alcohol and water.

In the practice'of my invention I prefer to use isopropyl alcohol and tertiary butyl duction in inflammability; Furthermore,

alcohol of petroleum origin, preferably obtained from the unsaturated constituents of still gases by absorption in sulphuric acic and subsequent treatment with water to lib;

From such proc. ess there may be separated by fractionation isopropyl alcohol and tertiary butyl alcohol. In my detergent composition the proportion of isopropyl alcohol usually is considerably greater than the content of tertiary butyl alcohol. The latter as a modifying agent, I prefer to have present ordinarily only in comparatively small proportion.

The detergent" composition preferably has an alcoholic strength calculated on the basisof the two alcohols, of approximately to 50 per cent." The balance of the composition is preferably water with'or without additions of coloring agents, aromatic substances, or odor yielding constituents, as may be desired. v

A water-free or sub'stantially anhydrous mixture of isopi'opyl alcohol and tertiary butyl alcohol evaporates quite rapidly when used as a detergent, and, of course, possesses a certain'measure of inflammability. I have observed that the mixture of the two alcohols with Water present to the extent of 50 percent, possesses a pronounced detergent action, and while not suitable for all those purposes to which the anhydrous mixture israther energetically applied. By incorfl V have set forth in the illustrative formula a composition containing from 2 to 4 per cent poration with water to the extent of 50 per cent, or thereabouts, a practically noninflammable fluid, or, at least, one which will extinguish a lighted match when the latter is plunged into it, is obtained.

In addition to this a composition in which isobutyl alcohol is the major alcoholic constituent and containing about 50 per cent of water, generally speaking, has a greater antiseptic or germicidal action than the concen- That is, maximum antiseptic dilution represents a composition containing about 50 percent alcohols with the huonly very small 1927. Serial No. 193,384.

tanol representing from about cent of the complete mixture.

Therefore, using the Preferred fOrInula of the present invention I obtain not only maximum antiseptic action, but a reduced rate of evaporation and a considerable rethe detergent has a somewhat smooth and slippery feeling when applied to textures "for cleansing purposes, and thisI consider an advantage. v

2 tea per- A suitable composition consists of highly purified isopropyl alcohol 46 per cent, tertiary butyl alcohol 2 to l per cent, and water from 42 to 50 per cent. I

This forms a clear solution or liquid detergent vehicle in which the rather pungent odor of the'isopropyl alcohol, or the tertiary butyl alcohol, as obtained from petroleum, may beinasked bythe addition of quantities of pleasantly odoriferous substances. Q

IVhile I prefer .a composition containing about 50 per cent of the alcoholic bodies, thereby securing a particularly effective antiseptic action and a practically noninflammable effect, I may proportion the water to the alcoholic components to obtain what from the illustrative one. Thus, I may reduce the alcoholic components to say, 30 per cent, on the one hand, or ma increase to say, per cent. on the other and, the content of water being varied in consequence.

'Likewise,'the proportion of isopropyl alco hol to that of the tertiary butyl. alcohol may be varied more or less, preferably keep-" ing the content of the tertiary butyl alcohol relatively low, in order that it may serve more as a modifying agent for the isopropyl alcohol, than to yield of itself positive or pronounced detergent qualities. While I of tertiary butyl alcohol, I may introduce larger quantities, for example, 5' to 15 per cent, and still have a compositioncontaining the modifying alcoholic body in minor proportion.

Acomposition which I have also found various other compositions varying some- BOZZPOOSliZlOEl'COZDDZiSiIW "water isomowl al- .L b 7 n coliol and iei'tiary lousyl alcohol {both of the latter preferably being 01 )etioleum origin} the proportion of alcohols being substantielly at max um antiseptic dilution, said coinyosiiion b mg substantially non-inflammable 21 om oe i'ature (65 F), having ionssubstentially.less s-hon *ena'rmte'cl isopropyl alcohol and; illie Equality of rubloingv-sinoo'bh ereby the lexinre of l fine surface onecl with said composition remains llllln 1. A v detergent composition comprising water, isopropyl alcohol ancl teriier bueyl alcohol, the proportion of alcohols being substantially at maximum antisep gic, clilufiiong. said composieion being substantiallynon-infiemmeble at room temperetui'e (65 351), having a rate of evaporation substenn q tiel'ly less than that 01 concentraoeo ropyl alcohol and tertiary butyl alcohol and from 79 no 30 per cent of Waller, the tertiary butyl alcohol being but a minor proportion of she alcoholic content.

4 A detergent composition containing 46 per cent of isopropyl alcohol, from 2 to 1} per cent of tertiai y outyl alcohol, and water ei'centages being based on the enilie coinposiiion. 

